<?phprequire_once 'HTMLPurifier/URIScheme.php';/** * Validates nntp (Network News Transfer Protocol) as defined by generic RFC 1738 */class HTMLPurifier_URIScheme_nntp extends HTMLPurifier_URIScheme {        var $default_port = 119;    var $browsable = false;        function validate(&$uri, $config, &$context) {        parent::validate($uri, $config, $context);        $uri->userinfo = null;        $uri->query    = null;        return true;    }    }